Assighob of one-half to



W. GRIKSCHEIT.

DRAIN PLUG. APPLICATION FILED IAN.2. 1920.

',1,433,001. Patented 001124,1922.

gwuewtofz @Rennais Patented Z4, 1922.

Hilti@ WILLIAM GRIKSCHEIT, OF DETROIT, MCHIGAN, ASSIGNOR OF ONE-HALF TOTHOMAS B. MOTHER/ SDSL GF WNIDSOR, ONTARIO, CANADA.

naam PLUG.

Application filed January f2, 1920. Serial No. 348,880.

To all eli/wm t may concern:

Be it known that I, WILLIAM Gntirsc-Hnrr, a citizen of the United Statesof Aimerica, residing at Detroit, in the county of l/Vayne and State oflVlichigan, have invented certain new and useful Improvements in DrainPlugs, of which the following is a specication, reference heilig hadtherein to the accompanying dravvings. Y

The invention relates to drain plugs and has for its object theobtaining of a construction in which the drain valve is incorporated inthe itting forming a conduit connection. lt is the further object toobtain an arrangement in which but. slight clearance is required. Tothis end, the invention consists in the construction as hereinafter setforth.

ln the drawings:

Figure l is a longitudinal section through the drain plug;

Figure :2 is an end elevation thereof.

ln many places such, for instance, as for use on fuel tanks on motorvehicles, it is usual to connect the conduit to the bottom of the tank.It is also usual to provide a drain cock an'ddin some instances this isattached to the fitting to which the conduit is connected, llVith thelatter construction the drain cock extends downward a considerabledistance from 'the bottom of the tank, which is objectionable asrestricting road clearance. lith my improved construction I haveprovided a drain cock incorporated in the fitting which forms theconnection for the conduit without increasing the depth of said fitting,or any other connected part. I have also obtained a. simple andinexpensive construction to manufacture.

As shown. A is 'the tank which is provided in its bottom with anaperture surrounded b v the threaded bushing escutcheon B. C is myimproved itting, which isof substantially 'l' form having anupwardly-extending threaded nipple D forming a stub extension forengagement with the bushing B and provided with a shoulder to abut saidbushing. The head portion of the T extends horizontally and is providedwith an aperture E extending completely therethrough and intersectingwith the aperture F through the nipple D. On one side of the point ofintersection with the passage F the passage E is counterbored and isinternally threaded for the engagement of a valve stem G. The inner endof this Astem has a conical valve face H adapted to engage a seat I,which is between the passage F and a downwardly directed discharge portd, The stem G is provided at its outer end with a polygonal head K, bymeans of which it may be adjusted towards or from said seat. L is athreaded nipple at the opposite end of the T-head, which is engaged by apacking gland vlvl for securing thereto the conduit N.

With the construction as described, the fitting is attached to the tankby screwing the nipple D into the bushing B and if desired, a strainer Omay be secured in a cofinterbore in said nipple to project upward intothe tank. The valve stem G is normally in a position where the valve His in contact with the seatso as to out off the port J. However7whenever it is desired to drain the tank, the polygonal head K may beturned by means of a suitable wrench7 thereby withdrawing the vlave fromits seat and opening tommunicat-ion with the drain port (l. lnasmuch asthe valve stem is arranged horizontally, there is nothing projectingdownward to interfere with road clearance.

What I claim as my invention is:

l. A drain valve for fuel tanks, comprisingl a one piece T-shaped casingthe stem of said casing comprising an upwardly-extending threaded nippleforming a stub extension adapted to be secured into the escutcheon ofthe tank and provided with a shoulder to abut said escutcheon, means forconnect-ing` a conduit to one end of the T- head, and a valve engagingthe opposite end of said T-head for opening communication with a drainport.

2, A. drain valve for fuel tanks comprising :i one piece substantiallyT-shaped casing` the stein of said casing comprising a stub extensionadapted to be secured into the escutcheon of the tank and provided witha shoulder to abut said escutcheon, means for attaching a conduit to oneend of the vhead of said T, a valve stein having a threaded engagementwith the opposite end of the head of the T and controlling a downwardlydirected drain port. and a polygonal head on said valve stein foradjusting` the same.

3. A. drain valve for fuel tanks comprising a substantially T-shapedcasing the stem of said casing comprising a stub extension adapted to besecured into the escutcheon of the tank and provided with a shoulder toabut said escutcheon, and an externally threaded nipple-at one end-ofthe--T-head, said casinghaving a passage extending coinpletely throughsaid T-head and intersecting with the passage throughlthe stubexten#sion7 a valve lstem4 engagingan internally threaded portion of thepassage through the T-head at the opposite end of said T-liead, a seatfor the valve arranged adjacent to a downwardly directed drain port, anda polygonalihead ior the outer endrof said stein."`

4:. A combined drain valve iitting and `conduit connection for fueltanks, comprising a substantially Tlshaped Casing4 termed of asingle'pieee of metal the stein of said casing comprising a stubextension. adapted-to be secured intothe escnteheon of: thetankA andprovided with a shoulder to abut said eseutcheon', .the T-head having apassage eX- tendinghorizontally therethrough andinterseeting: a verticalpassage` eXtendingt-hrongli said stuh extension, there beingv provided adrain port. communicating with said hori- Zonta'l passage at one side oisaid vertical passage, avalveengaging a threaded portion of said.horizontally extendingpassage, a seat for said valve between said portand vertical passage, and a polygonal head iorrsaid valve stein. I

5. A drain valve forfiiel'tanls comprising a one piece T-shaped casingthe stein ofi sain casing comprising an upwardly extending threadednipple .forming a stub extension adapted to be secured into theescutcheon o4Z the tank and provided with a shoulder to

